Automobile wheel-brake.



R. H, WHITE. AUTOMOBILE WHEEL BRAKE.

APPLICATION FILED D110. 8, 1911.

1,078,976. Patented Nov. 18, 1913.

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"n-lcn'ltcd Nov. 18, 19.13.

Divided and this npplicnLon filfitl December 8,

To all wh m is own (BOMM'F'IL lilo il; known that l, lilonmrr 1H. l l 'nrrn, n. nitizzfi of the Unilcrl Slates, residing in. (llcvclnnd, in the county of Cnynhogn and Stolen of Ohio, horn invonlfcd n ccrranin now ond useful llniprornnionb in Antoinohilc lliliodlllrnkor. of which lJhe following is n full, clear, and exact description.

This invention 'i'elnles lo what is; known no the outside brake for the driving wheels oi? an automobile; and consis s in the means, nnbntn-nlinlly as shown in tho drawing, and. h cinnil'lxsr described nniilclnirncd, for supporlin g and on operating n split hrnkc band that it may bc caused to grip or rclcnsc n cylinclricnl hrnkn drnm wihhin it.

in "lLllC din-wing, higg'nro l is a seclionnl cnrl vi-cw of tho invention in the plane indi' cnlccl in lino l l on Euig. 3; and Fig. .2 is n. control horizonl'nl one-lion of thc invenlion.

l zfcrring lo tho par 1-; by lcilcrs, A. rcprcscnln n :non-rolntivo part which is plOVlLlrtfl with two arms l3, B", which extnnd hori-- zonmlly in opposil'c clireclions. The part. A is inlcnclcd to be secured to or Lo he formed on the outer cud of what is 5301110- liinics known an the dead nxlc; that is lo any. lihn lmlcrnlly cxl'rndclfl lubnlnr incinhcrs ol lhc casing which incloncs tho dill crcnl'inl nicchnnisn'i of lhc nul'oniobilc. 'i'his nonrntzllivc purl A has :i cyliinlrirnl pin-lion upon which "the hub of the driving: whccl rolnhibly monnl'rwl by 111011115 ol' suilnblc nnti-lriction bearings subslnnliully as shown. A cylindricnl brnkc drum 1) i.--; rigidly lixcd to the whccl hub. 'lhc \vhccl hnh only lnlvc such ronnoclion with tho livc nxlc 'l lhnl it may bc rolnlcd thcrchy.

(i rcprcscnts lhc oulcr l nkc hand which in in thc form of :1 nplil ring. About iniih wiry bolwccn its cnds it. is providcd with n boos g in which is n llfil'lzfllllill slot y. A llnngc hearing slzud E) lixcd to tho arm 13 pas-Lacs Through [his slot. lhernby serving as a support for tho middle pnrl of tho brake hand. AL the opposite sidc ol [his ring nrc locnied nicnnss by which tho undo thnrcol may no drawn together so as to :nusc lhc brnkc bond to grip thc llnngzc D which itsurrnnnlln, or rclcnsc ihc SlllllC, as only ho rcqnircd. .lhcnc HWHHH connh-zl oi. an opcrnling' bcll crank lcrcr M which is pivolcd in tho upper part. of lhc brnko hnnd nczir lhc and. l'llGl'CUll. A link ii in pivolcil in n ohnru arm of lhin lover and prisons looncl y down (ill lock nut 71. scrcwcd onto [his link above lhc loop IF, and furnishcs a shoulder adoptcd in engage whh this loop, and thereby limit the downward inovcmcnl; of the upper part ol lhc bakc band. A coil spring I surrounds the link and is UUIDPI'OHSQd bollwcrn i'hc loop 71 and (he boss 9.

iVhcn it is dcsircd lo contract. lhe hruko band and cnunc it to grip the hrnkc drum, tho opcrnling lover is moved in the direclion inclirnlrd by the arrow, which will nusc lho undo ol' lhc broke bond to be drawn logclhcr und produrc lhc dcsircd rcsull. i l hcn {1hr lcvcr is swung in tho opprmilc dircclion, howcrcr, lhc s 'n'ing P will move the lowcr pnrl ol' l'hc brnhc bond downward and thcrc'l'orc HWHY from tho bra-kc drum until lhc shoulder l uruishcd by tho nut. 11. strikes lhc loop 71. Thu inovcincnl oil the lcvcr 1 will nlso cnusc the uppor part of the brake bond to bc lil'lcd away from the brake. drum. 'lhc niiddlc part. of thc hrnkc (.lruin only hc inorcd horizmilnll to whnl'cvcr cxlicnl in nrcwsnry lov Ercc lhoinncr surface ol lbc brnkc bond l'roin contact with the lunllc druni whcn lho split (lids of tho lmnd arc cxpnndcd by lhc nicans uhovc spccilicd.

lluring (lc.-;rribcd n| inrcnlion, l claim:

'l. "lhc conihinnlion ol rolnlublc whccl having: :1 cyliiwlricnl brnhc drum, of :1 split; brnkc bond which cmhrnccs said broke drum, moons supporling said b'nkc bond at :1 point about cqui-disl'nnt from its ends,

:\ lixcd loop ndjnccnl'. lo tho ends of said luukc band. an (moi-Ming lcvcr pivoted to tho brukc bond ncar lhc cud lhcrool which in nbovc said loop, n link which is pivolcd lo suid lcvcr and cxicndn downward thercl'roni through suid loop nnd is conncctcd with lhc brnkc bond ncur the cod lhcrcof which ll; hclow onid loop. a spring" acting on mid lowcr cnd ol' lhc hrukc hand to move it down, and n shouldc on the link above said loop in llll'lll wuid downward movement.

E3. 'lhc ooiohiimliiiin ol n non-rotating incnibcr. hnriugr op; lily cxlnndcd horimnizrl lirnn; nnlel n criindricnl portion, n

ion

Wheel which is rotatably mounted on said cylindrical portion and has a cylindrical brake drum, a split brake band which embraces said drum. and is connected near its middle with one of said arms by means which permit a. substantially horizontal sliding movement of said brake band, a loop carried by the other fixed horizontal arm adjacent to the split in said band, an operating lever pivoted to the upper part of said brake band near its end, a link which is pivot-ally connected with said lever and extends loosely down through said loop and is connected with the lower part of the brake band near its end, a spring embracing said link and compressed between the loop and the lower end of the brake band, and a shoulder on said link above said loop.

3. The combination of a non rotating member, a rotatable wheel hub carrying a cylindrical brake drum, a stud secured to said non-rotatable member, a split brake band embracing said brake drum and having about midway between its ends an outwardly projecting boss in which is a horizontal slot through which said stud passes, a bell crank lever pivoted to the upper part of said brake band near the end thereof, a loop fixed to said non-rotatable member, a link pivoted to said bell crank lever and extending down- Ward therefrom through said loop and through a boss on the lower part of the brake band near the end thereof, an adjustable nut upon said link above said loop, a compressed coil spring between said loop and boss, and a nut screwed onto the lower end of said link engaging with said boss.

A brake mechanism comprising a shaft, a-brake drum thereon, a pair oii brake arms each of which has a fixed pivotal connection at one end and is provided with a brake shoe adapted to engage said drum, an actuating lever pivotally connected with one of said arms, a link pivotally conneeted at one end with said lever and its other end having an adjustable pivotal connection with the other 7 held from rotatory movement, an abutment I no located adjacent to the meeting; ends of said brake elements, a lever pivoted to the meeting end portion of one ofsaid brake ele ments, link member pivot-ally connecting said lever and the meeting end portion of the opposite bralzze element, and resilient means acting against said abutment and said last invas ve mentioned brake element, whereby said other brake element is moved into Contact with said rotatory element before said resili" ently opposed brake element when said lever is moved in the direction to set the brake and said resiliently opposed brake element. is the first to move out of contact with said rotatory element on the reverse stroke of said lever.

6. A brake comprising an element having a circumferential face and'adapted to rotate with theiwheel, oppositely disposed brake elements adapted to contact with the circum fcrential face of said rotatory element, said brake elements being held from rotatory movement, an abutment located adjacent to the meeting ends of said brake elements, a lever pivoted to themceting end portion of one of said brake elements, a rigid linl: member pivotally connecting said lover and the meeting end portion or the opposite brake element, said link member slidaoly engaging said abutment, and a spring acting against said last mentioned brake element and said abutment. Y 7. A brake comprising a rotatory drum, brake-band extending around said drum and adapted to contact therewith, said bralreband being held against rotatory movement, but permitted movement toward and away from said drum, an abutment located adjacent to and intermediate the ends of said brake-band, said abutment having" an open ing therethrough, an operating lever pivotally connected to one end portion oi" said brake band, a bolt slidably fitted through the opening in said abutment and pivotally con- 8. A brake comprising a rotatory drum, :1

brake-band extending around said drum adapted to contact therewith, said brake band being held against rotatory movement, but permitted movement toward and away from said drum, an abutment located adjacent to and intermediate the ends of said brake-band, said abutment having an open ing therethrough, an operating lever pivotally connected to one end portion of said brake-band, a bolt slidably fitted through the opening in said abutment and pivotally connected at one end to said operat'nm lever, said bolt beingpivotally and adjustably c0nncctcd to the opposite end of said bruke band, a spring acting; against said last men tioned end of the brake-band and the adjacent side of said abutment, and an :uljustable stop on said bolt adapted to engage the opposite side of said abutment.

9* A brake comprising a rotatory drum,

ltlli oppositely disposed brake-elements adapted lo contact with said drum, said brake-elenlenls being held against movement in the direction of rotation of said drum, on abutment located adjacent to the ends of said brake elen1ents,an operating 10 ver pivoted to the end portion of one of said brakeelements, :1 link member pivotally connecting said operating lever with the end portion of the opposite brake-element, a stop on said link member adapted to contact with said abutment to limit the movement of said link member in the direction of said last men tioned brake element, and resilient means not ing against said abutment and said last mentioned brake-element.

In testimony whereof, I hereunto affix my signature in the presence of two witnesses.

ROLLIN H. WHITE.

Witnesses w H. R. SULLIVAN, 1*]. L. THURSTON. 

